stralis-he
Hydrogen-electric propulsion system

Aviation is electrifying, but batteries are limited.
Our patent-pending system enables up to 30x longer flights, unlocks sovereign fuel solutions and emits nothing but water vapour.
Stralis–HE
A hydrogen-electric fuel cell system designed for endurance
Aviation is electrifying, but batteries alone are limited. Our scalable hydrogen‑electric system integrates a fuel cell, liquid hydrogen tanks, and electric motors for UAVs and aircraft. Our technology is 6x lighter than the current state of the art, enabling up to 30x longer flights and a greater payload than battery-electric.
Long-range endurance
Sovereign fuel solution
Emits only water vapour





When batteries tap out, Stralis carries on with hydrogen-electric endurance
Our long-range high-temperature PEM technology enables up to 30x longer flights.

Use-case: Bonanza A36-HE Retrofit Payload Range. Current Hydrogen-Electric vs. Battery vs. Fossil Fuel vs. Stralis Hydrogen-Electric
Aircraft developers
Fixed wing electric and eVTOL
Our hydrogen-electric propulsion system can upgrade battery-electric aircraft, replace conventional engines, and be integrated into new aircraft designs.
Talk to our team ›
Leaded aircraft fuel is being phased out
Worldwide 150,000 piston aircraft use fuel that will soon be banned. Our zero- emission system is designed to retrofit Beechcraft Bonanza 36, Cirrus SR22T, Vans RV-10, Mooney M20 and more.

Retrofit and replace
Piston engine aircraft
We integrate our proprietary fuel cell system, liquid hydrogen tanks and electric motors into aircraft. Our system is designed to retrofit aircraft like the Beechcraft Bonanza 36, Cirrus SR22T, Vans RV-10, Mooney M20 and can replace a Continental IO engine.
Talk to our team ›We are currently taking expressions of interest for Bonanza and piston engine retrofits
Learn moreBuilding and testing
After thousands of hours in testing, Stralis-HE doesn’t just measure up, it stands out on every metric
Explore use-cases
Our Stralis-HE propulsion system scales to suit a range of applications.


